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<b>A study of pictures of Earth by night has revealed that artificial light is growing brighter and more extensive every year.</b><p>Between 2012 and 2016, the planet's artificially lit outdoor area grew by more than 2% per year.<p>Scientists say a "loss of night" in many countries is having negative …

Time travel in science fiction novels is tricky if not completely unpredictable. But it is possible to at least peer into the past as some climate scientists in Alaska are doing.<p>Scientists are actively trying to understand what's happening to the Earth's permafrost, the frozen layer of organic …

“Things are changing. It’s just how do you get them to change fast enough?”<p>When farmers make the news in relation to climate issues like droughts, floods or extreme heat, they are often described in opposition to both environmentalists and, sometimes, scientists alike.<p>But such a depiction doesn’t …

And what better perspective than from space?<p>Climate change due to human activity is causing visible shifts on our planet, and NASA is uniquely positioned to observe these effects.<p>"If we continue on our current course, it's going to be hard to feed this planet because it's so hot," Ellen Stofan, …

Urbanization, agriculture, and energy could gobble up 20 percent of the world’s remaining natural land by 2050.<p>By 2050, the world’s population is projected to approach nine billion. With more people will come more developed land—a lot more.<p>Urbanization, agriculture, energy, and mining put 20 …